Powder-metallurgically produced composite material and method for its production
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 26, 2002
Grant Date -
N/A
app pub date -
Jan 25, 2000
filing date -
Jan 29, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to powder-metallurgically produced composite material comprising a matrix of a metal with a melting point of at most 1,200.degree. C. and a granular additive which consists of at least two refractory components embedded in said matrix, characterized in that the refractory components are present as mixed crystals or intermetallic phases. In one embodiment of the invention one or a first group of refractory component(s) has a melting point in the range of 1,500 to 2,400.degree. C. and the second or the second group of refractory component(s) has a melting point above 2,400.degree. C. The composite material is produced by heating a pulverized mixture of the refractory components, thus converting it into a mixed crystal or an intermetallic phase, and then combining the powder obtained by cooling and pulverizing with a metal matrix having a melting point of at most 1,200.degree. C. by means of powder-metallurgy. The composite material of the present invention is suitable as switching contact in electrical vacuum switch boxes.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully